Telephone-mouthpiece



V.'CONOMOS. TELEPHONE MOUTHPIECE. APPLICATION HLED MAY 25. 1921.

Patented July 26, 1921.

INVENTOR.

UNITED. STATES PATENT OFFICE.

VAN OONO'MOS, OF BLAIRSVILLE, PENNSYLVANIA.

TELEPHONE-MOUTHPIECE.

Application filed. May 25,

, To all whom it may concern:

as that it cannot be broken, with consequent discomfort or possible injury to the user from the broken parts, and is designed to takethe placeof the ordinary hard rubber or similar telephone mouthpieces.

I accomplish this object by providing a mouthpiece of soft yielding'material, preferably soft rubber, incapable of breaking or fracture, and, furthermore, the soft yielding mouthpiece ,isprovided with means by which it may be readily attached to any ordinary telephone.

It has been the custom heretofore to make telephone mouthpieces out of brittle substances which are very easily broken or chipped, with the consequent danger to the user of such a telephone of injury from the chipped or sharp edges, or by receiving an electric shock in event of coming in contact with a part of the metal on the transmitter.

In my improved construction, the mouth piece is formed of soft or elastic rubber so as to overcome the objectionable features found in mouthpieces composed of brittle 'substances, and has, at the same time, the additional advantages of being light, durable and inexpensive.

Further objects of my invention will appear from the following detailed description of the accompanying sheet of drawing, in which similar characters of reference designate corresponding parts, and in which Figure 1 shows a side elevation of a telephone with my improved type of mouthpiece attached thereto,

Fig. 2 is a front elevation of the mouthpiece,

Fig. 3 is a vertical section of the mouthpiece and holder,

Fig. 4 is a sectionalview on the line 1 i of Fig. 3, and c c l Fig. 5 is a detailview of the ring.

Referring to the drawings, 10 designates a telephone stand, of any. usual construction,

Specification of Letters Patent. Patented July 26-, 1921.

1921. Serial No. 472,332.

to which the transmitter 11, also of a famillar type, is adjustably secured by means of the screw 12.

The transmitter 11 has a mouthpiece holder 13 secured thereto by means of a threaded projection 1 the said holder having a centrally disposed sound transmitting opening, and being made up of the disk-like body portion shown, from which project the concentrically arranged flanges 15and 16.

To the inner flange 15. which is preferably of less height than the flange 16, are secured radially extending lugs ITarranged at diametrically opposite sides of the inner flange and adapted to extend a limited distance in the groove or spacebetween the flanges.

The said mouthpiece is provided with a metal ring 20, which has, in diametrically opposite sides thereof, bayonet slots 21 vwhich engage the radial lugs 17 on the inner flange member 15, the said ring 20 being seated in a ring receiving socket in the smaller end of a soft flexible mouthpiece 22, preferably formed of soft rubber. The ring may be held in its socket either by friction and contraction of the rubber mouthpiece, or it may be cemented or otherwise positively secured in place. It will preferably extend outwardly beyond the socket in the.

mouthpiece to provide a projecting portion in which the bayonet slots 21 are formed. The. soft flexible mouthpiece 22 has adjacent its rear end a transverse filter 23 which is preferably integrally molded with the mouthpiece, and has formed therein a plurality of apertures 24 for the purpose of carrying the sound of the voice to the diaphragm. The outer flange 16 in addition to forming a housing or protection for the inner flange l5 and the outwardly extending lug 17, also tends to enhance the general appearance of the mouthpiece.

It will be observed that the holder 13, which may be attached to any'transmitter stand, is so formed as to house between its flanges the inner end of the mouthpiece 22 -with its attaching ring, and the engaging pins or equivalent instrumentalities by which the ring 20 is held in place, so that these parts are protected and danger of displacement or injury to them is avoided.

From this disclosure it will be apparent that my improved mouthpiece possesses utility and novelty over the common form now in use. It is not only convenient for securing cleanliness and sanitation, as it can readily be removed for cleaning or sterilizing by disengaging it from the holder, but also tends to remedy existing defects found in mouthpieces formed of hard, brittle substances hereinbefore specified.

While I have shown. my invention in this particular form, it will be obvious to those skilled in the art that departures -trom the form and details herein shown may be made without departing from the scope of the invention.

I claim:

1. A mouthpiece for telephones, comprising a holder provided with t 'ansmitter engaging means, spaced flanges extending from said holder to form an annular groove, securing means outwardly extending from one of said flanges, and a flexible mouthpiece having its end projecting into said annular groove and detachably engaged with said securing means.

2. A mouthpiece for telephones, comprising a centrally perforated disk having transmitter engaging means extending from one face thereof, spaced flanges extending from the opposite face of said disk to form an annular groove, securing means outwardly extending from the inner flange, a flexible mouthpiece having a socketed end projectin into said annular groove, and a ring mounted in said socket and detachably engaged with said securing means.

3. A mouthpiece for telephones, comprising a centrally perforated disk having a threaded transmitter engaging lug projecting from one side thereof, concentric spaced flanges projecting from the opposite side of said disk to form an annular groove, radially disposed pins projecting outwardly from the said inner flange, a flexible mouthpiece having a socketed end projecting into said groove over said inner flange, and a rigid ring seated in said socketed mouthpiece and having at its inner end pin engaging means.

A mouthpiece for telephones, comprising a centrally perforated disk, a threaded transmitter engaging lug projecting from one side of said disk, spaced concentric flanges projecting from the opposite side of said disk to form an annular groove, radially disposed pins projecting outwardly t'rom the inner flange, a flexible mouthpiece having a socketed inner end projecting into said groove about said inner flange, and a metal ring seated in the socketed end of said mouthpiece and having a projecting edge provided with bayonet slots to detachably engage said pins.

In testimony whereof I have hereunto set my hand. VAN CONOMOS. 

